EXHIBIT 99.2
                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002


         In connection with the Quarterly Report on Form 10-Q of Plexus Corp.
("Plexus") for the period ended June 30, 2002, as filed with the Securities and
Exchange Commission on the date hereof (the "Report"), I, Thomas B. Sabol, Chief
Operating Officer and Chief Financial Officer of Plexus, certify, pursuant to 18
U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley
Act of 2002, that:

         (1) The Report fully complies with the requirements of section 13(a) or
15(d) of the Securities Exchange Act of 1934; and

         (2) The information contained in the Report fairly presents, in all
material respects, the financial condition and results of operations of Plexus.

/s/ Thomas B. Sabol
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Thomas B. Sabol
Chief Operating Officer and Chief Financial Officer, Plexus
August 14, 2002